HARBOUR ISLAND, BAHAMASWhat the kids do: Lose next year's tuition at the slots on Paradise Island; get smashed at Nassau's massive, multibar Zoo Club and Café.

What you'll do: Not much. That's the beauty of this flat speck in the sea—just 50 miles and a universe away from Nassau's cruise port and megaresorts. Okay, scratch that: There's plenty to do, including horseback riding, scuba diving, snorkeling, boating, and cycling. But you'll probably spend your time getting up close and personal with the island's famous pink sand. And with Pink Sands, the legendary 20-acre property popular with music, fashion, and Hollywood tastemakers ("Would you like an umbrella in that drink, Mr. De Niro?"). The 25 cottages are pastel-colored and decorated in a breezy Indonesian–Caribbean style, and the number of local birds perched about adds to the quiet, low-key vibe. Don't worry: It's no monastery. Folks here know how to enjoy the occasional rum-filled Bahama Mama or Goombay Smash. Just not in the same way those kids at the Zoo do.